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  <title>The RecursiveFilterIterator class</title>

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 <h1 class="title">The RecursiveFilterIterator class</h1>
 

 <div class="partintro"><p class="verinfo">(PHP 5 &gt;= 5.1.0)</p>


  <div class="section" id="recursivefilteriterator.intro">
   <h2 class="title">简介</h2>
   <p class="para">
    This abstract iterator filters out unwanted values for a <a href="class.recursiveiterator.html" class="classname">RecursiveIterator</a>.
    This class should be extended to implement custom filters. 
    The <span class="methodname"><strong>RecursiveFilterIterator::accept()</strong></span> must be implemented in the subclass.
   </p>
  </div>


  <div class="section" id="recursivefilteriterator.synopsis">
   <h2 class="title">类摘要</h2>


   <div class="classsynopsis">
    <div class="ooclass"></div>


    <div class="classsynopsisinfo">
     <span class="ooclass">
      <span class="modifier">abstract</span>
      <strong class="classname">RecursiveFilterIterator</strong>
     </span>
     
     <span class="ooclass">
      <span class="modifier">extends</span>
      <a href="class.filteriterator.html" class="classname">FilterIterator</a>
     </span>
     
     <span class="oointerface">implements 
      <span class="interfacename"><a href="class.outeriterator.html" class="interfacename">OuterIterator</a></span>
     </span>

     <span class="oointerface">, 
      <span class="interfacename"><a href="class.recursiveiterator.html" class="interfacename">RecursiveIterator</a></span>
     </span>
     {</div>

    
    <div class="classsynopsisinfo classsynopsisinfo_comment">/* 方法 */</div>
    <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><a href="recursivefilteriterator.construct.html" class="methodname">__construct</a></span>
    ( <span class="methodparam"><span class="type"><a href="class.recursiveiterator.html" class="type RecursiveIterator">RecursiveIterator</a></span> <code class="parameter">$iterator</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">void</span><span class="methodname"><a href="recursivefilteriterator.getchildren.html" class="methodname">getChildren</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">void</span><span class="methodname"><a href="recursivefilteriterator.haschildren.html" class="methodname">hasChildren</a></span>
    ( <span class="methodparam">void</span>
   )</div>

    
    <div class="classsynopsisinfo classsynopsisinfo_comment">/* 继承的方法 */</div>
    <div class="methodsynopsis dc-description">
   <span class="modifier">public</span>
   <span class="modifier">abstract</span>
   <span class="type">bool</span><span class="methodname"><a href="filteriterator.accept.html" class="methodname">FilterIterator::accept</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span>
   <span class="methodname"><a href="filteriterator.construct.html" class="methodname">FilterIterator::__construct</a></span>
    ( <span class="methodparam"><span class="type"><a href="class.iterator.html" class="type Iterator">Iterator</a></span> <code class="parameter">$iterator</code></span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">mixed</span><span class="methodname"><a href="filteriterator.current.html" class="methodname">FilterIterator::current</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">Iterator</span><span class="methodname"><a href="filteriterator.getinneriterator.html" class="methodname">FilterIterator::getInnerIterator</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">mixed</span><span class="methodname"><a href="filteriterator.key.html" class="methodname">FilterIterator::key</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">void</span><span class="methodname"><a href="filteriterator.next.html" class="methodname">FilterIterator::next</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">void</span><span class="methodname"><a href="filteriterator.rewind.html" class="methodname">FilterIterator::rewind</a></span>
    ( <span class="methodparam">void</span>
   )</div>
<div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="type">bool</span><span class="methodname"><a href="filteriterator.valid.html" class="methodname">FilterIterator::valid</a></span>
    ( <span class="methodparam">void</span>
   )</div>


   }</div>


  </div>

 </div>

 






















<h2>Table of Contents</h2><ul class="chunklist chunklist_reference"><li><a href="recursivefilteriterator.construct.html">RecursiveFilterIterator::__construct</a> — Create a RecursiveFilterIterator from a RecursiveIterator</li><li><a href="recursivefilteriterator.getchildren.html">RecursiveFilterIterator::getChildren</a> — Return the inner iterator's children contained in a RecursiveFilterIterator</li><li><a href="recursivefilteriterator.haschildren.html">RecursiveFilterIterator::hasChildren</a> — Check whether the inner iterator's current element has children</li></ul>
</div>
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